Clark made his wrestling debut in 1989 under the ring name The Nightstalker, competing in the Minnesota-based American Wrestling Association.
When the AWA folded in 1991, Clark began competing for World Championship Wrestling. He replaced an injured Diamond Studd at Starrcade to team with Rick Steiner in a losing effort to Vader and Mr. Hughes.
Clark joined Smoky Mountain Wrestling and defeated Tracy Smothers to become the promotion's second-ever "Beat The Champ" Television Champion on February 2, 1993. He lost the title to Tim Horner six days later. He also briefly wrestled in Herb Abrams' Universal Wrestling Federation.
In May 1993, Clark debuted in the World Wrestling Federation as Adam Bomb, the newest client of Johnny Polo. Wearing luminous green contact lenses, and sporting a red tongue. Bomb's gimmick was that of a survivor of the infamous Three Mile Island nuclear meltdown accident, which was further emphasized by his ring name being a pun on the "atom bomb". Seven months after his debut, Harvey Wippleman replaced Polo as Bomb's manager because Polo wanted to focus on managing WWF Tag Team Champions The Quebecers. The Adam Bomb concept and costume was designed and created by Tom Fleming.
Bomb made his pay-per-view debut at Survivor Series, where he teamed up with Irwin R. Schyster, Diesel and "The Model" Rick Martel against Razor Ramon, The 1-2-3 Kid, Marty Jannetty and "The Macho Man" Randy Savage in an elimination match. His team went on to lose the match, though he was the last remaining wrestler for his team before being pinned by Jannetty after a roll-up.
Following this, he participated in the 1994 Royal Rumble, where he was the final entrant in the match. However, he lasted less than five minutes before being eliminated by Lex Luger. He also was one of nine wrestlers who helped Yokozuna beat Undertaker during a Casket match. Following the Rumble and a feud with Earthquake, Bomb turned face after his manager Harvey Wippleman turned on him and helped new client Kwang attack him. As a face, he would throw rubber nuclear missiles into the audience as he walked to the ring and after he won a match. After briefly feuding with Kwang and Bam Bam Bigelow, Bomb was moved down the card and began competing exclusively on WWF Superstars before leaving the promotion in August 1995.
In 1997, Clark rejoined WCW as Wrath at Uncensored, a helmeted martial artist who, along with Mortis, battled Glacier and Ernest Miller. The four characters, collectively known as "Blood Runs Cold", was WCW's attempt to tap into the popularity of the Mortal Kombat video games. The angle continued until 1998 when Clark suffered an injury. After recovery, he returned to singles action later in the year as a face, debuting both a new attire and finishing move called the Meltdown while all Blood Runs Cold references were phased out. After a lengthy undefeated streak, Clark was rumored to be slated to become a future challenger to Bill Goldberg but had his momentum stopped on November 23, 1998 in a big loss to Kevin Nash. Wrath would continue to gain many victories into 1999 and entered a feud with Bam Bam Bigelow. At WCW/nWo Souled Out 1999, Bigelow defeated Wrath to end the feud. Clark tore his ACL in a match against Jerry Flynn on April 15, 1999 and spent a year recuperating.
Clark returned to the ring in April 2000, now using his real name. He formed a tag team with Brian Adams known as KroniK, and both became members of the New Blood. However, KroniK switched allegiances to the Millionaires Club after Vince Russo betrayed them and, on May 15, 2000, they defeated Shane Douglas and The Wall to win the vacant World Tag Team Championship. They later lost the title on May 30 to New Blood members Shawn Stasiak and Chuck Palumbo. KroniK was granted a rematch for the title at Bash at the Beach on July 9, and was successful in reclaiming World Tag Team Championship. KroniK then entered a feud with the entire Natural Born Thrillers stable, but retained the title against the Thrillers before losing it to Vampiro and The Great Muta at New Blood Rising on August 13. Following the title loss, KroniK turned heel after Vince Russo managed to bribe them in order to have them attack Bill Goldberg, who would be fired if he lost a single match. However, Goldberg managed to overcome the odds and pinned both Clark and Adams in a handicap match at Halloween Havoc. KroniK continued working as "hired muscle" by helping The Boogie Knights battle The Filthy Animals, and eventually helped their former enemies the Natural Born Thrillers before turning face once again in January 2001 by siding with Ernest Miller.
KroniK was sidelined when Clark needed stitches for a wound from a chair shot while Adams was hospitalized with appendicitis. While they were injured, WCW was purchased by the World Wrestling Federation in March 2001.
Clark and Adams returned to the WWF on the September 4, 2001 episode of SmackDown! by attacking and double chokeslamming The Undertaker. The team would go on to face The Brothers of Destruction at Unforgiven 2001 in a match for the WWF Tag Team Championship, which Clark and Adams lost. After two dark matches and a pay-per-view appearance, Clark was released from his contract while Adams began working for the Heartland Wrestling Association, which served as WWF's developmental territory.
After Brian Adams was released from the WWF in November 2001, he and Clark reformed KroniK made one appearances on the independent circuit, most prominently for World Wrestling All-Stars and All Japan Pro Wrestling. During their time in AJPW, they defeated Keiji Mutoh and Taiyō Kea for the World Tag Team Championship on July 17, 2002. KroniK were later stripped of the title due to contract problems. They wrestled their last match together in January 2003, losing to Goldberg and Keiji Mutoh. Shortly afterwards, both Adams and Clark retired due to injuries.
Clark has been married to Olivia Clark since 1997.
In July 2016, Clark was named part of a class action lawsuit filed against WWE which alleged that wrestlers incurred traumatic brain injuries during their tenure and that the company concealed the risks of injury. The suit is litigated by attorney Konstantine Kyros, who has been involved in a number of other lawsuits against WWE.Finishing moves
As Adam Bomb
Atom Smasher (Release powerbomb, sometimes while applying a pumphandle)
Neutron Bomb (Diving clothesline)
As Wrath / Bryan Clark
Death Penalty (Side slam)
The Meltdown (Pumphandle slam)
Diving fist drop
Inverted atomic drop
Inverted Boston crab
Leaping shoulder block, sometimes from the second rope
Multiple suplex variations
Belly to back
With Brian Adams
Double team finishing moves
High Times (Double chokeslam)
Total Meltdown (Powerbomb (Adams) / Diving clothesline (Clark) combination)
Double team finishing moves
Powerbomb (Wrath) / Neckbreaker (Mortis) combination
"War Machine" by Kiss (SMW)
"Love Dump" by Static-X (AJPW)
All Japan Pro Wrestling
World Tag Team Championship (1 time) – with Brian Adams
Pro Wrestling Illustrated
PWI ranked him #47 of the top 500 singles wrestlers of the year in the PWI 500 in 1995
PWI ranked him #466 of the Top 500 Singles Wrestlers of the "PWI Years" in 2003
Smoky Mountain Wrestling
SMW Beat the Champ Television Championship (1 time)
World Championship Wrestling
WCW World Tag Team Championship (2 times) – with Brian Adams
Wrestling Observer Newsletter
Worst Worked Match of the Year (1990) vs. Sid Vicious at Clash of the Champions XIII
Worst Worked Match of the Year (2001) with Brian Adams vs. The Undertaker and Kane at Unforgiven
Worst Tag Team (2000, 2001) with Brian Adams